- Mountain Illadopsis
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Mountain Illadopsis Illadopsis pyrrhoptera Scientific name definitions

Nigel Collar and Craig Robson
Version: 1.0 — Published March 4, 2020
Text last updated May 30, 2018

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Field Identification

13–14·5 cm; 20–30 g. Nominate race has olivaceous-grey crown with indistinct darker scaling, grey lores, cheek and neck side, narrow indistinct supercilium pale grey; upperparts dark rufous-tinged olive-brown, tail rufous-tinged brown; chin and throat greyish-white, shading to grey on breast and paler again on belly, latter tinged brown, flanks and undertail-coverts rich brown, thighs grey; iris hazel to reddish-brown, pale eyering; upper mandible greyish-black, lower mandible paler grey; legs brownish-grey to slate-grey. Sexes similar. Juvenile has whole upperside, including head, more rufescent-brown, crown like back. Race nyasae has top of head brown, breast paler grey than nominate.

Systematics History

Editor's Note: This article requires further editing work to merge existing content into the appropriate Subspecies sections. Please bear with us while this update takes place.

Previously placed in genus Malacocincla. See comments under I. rufipennis. Two subspecies recognized.

Subspecies


SUBSPECIES

Illadopsis pyrrhoptera nyasae Scientific name definitions

Distribution

N Malawi.

SUBSPECIES

Illadopsis pyrrhoptera pyrrhoptera Scientific name definitions

Distribution

E DRCongo, SW and E Uganda, W Kenya, Rwanda, Burundi and W Tanzania.

Distribution

Editor's Note: Additional distribution information for this taxon can be found in the 'Subspecies' article above. In the future we will develop a range-wide distribution article.

Habitat

Bamboo and dense leafy undergrowth of primary and secondary montane and transition evergreen forest, gallery forest, impenetrable thickets 2–4 m high on slopes (e.g. with Alchornea and Dracaena) and along streams (e.g. with Anisotes and Mimulopsis); at 1550–2800 m in Kenya and Uganda, 1600–2300 m in Malawi.

Movement

Resident; in W Kenya, irregular and rare occurrence in Kakamega Forest speculated as involving wanderers from higher areas (e.g. Nandi).

Diet and Foraging

Invertebrates, including ants (Formicidae), small crickets (Orthoptera), moths and caterpillars (Lepidoptera), and small snails; also berries and seeds. Forages in deep shade on forest floor and to 4 m up in vegetation, mostly below 1·5 m; turns over litter, probes leaf clusters, hops through tangled fallen branches. Found in pairs and in small parties of 3–6 individuals; joins bird waves, and attends army-ant swarms.

Sounds and Vocal Behavior

Song a duet, a simple melodious warble in which presumed male gives usually 3 well-spaced pure whistles on descending scale with interspersed brief chatter notes, “wheee… tata-whaaa… whoah” and “wheee… tatata-whaaa… ta-whoah”, while second bird (or several others) maintains unsynchronized chattering accompaniment, “chut-chut”, “chipchip­chip” and “prrrrrt” (Uganda); song variable, perhaps geographically, but basic structure similar throughout range; also described as “trrtrrtrr…ti-ti tiu tiyu”, like that of I. fulvescens but higher and more rambling. Contact calls include continual low twittering “chek-chek” notes when on the move, and rolled, nasal “prreet”.

Breeding

Jan–Feb and Jul–Aug, also breeding-condition bird and immature in May and bird with brood patch in Sept, in Uganda; breeding-condition bird in Mar in Kenya; Jun–Jul in DRCongo; oviduct eggs in Feb in Rwanda; breeds Sept in Malawi. Only one nest found, a substantial, rather sturdy cup of green moss, dry leaves, dry herb leaves and stems, thinly lined with dry rootlets and moss, 1·4 m above ground and extremely well hidden, as embedded 5 cm into dead dry leaves on thick bed of damp decaying leaves on rock ledge, overhung by fern leaves and dead tree leaves. Clutch 2 eggs, very pale blue-green with brown and purplish-brown splashes. No other information.

Not globally threatened. Generally uncommon to very common in different parts of range. Very common in W Rwanda. Often common in Uganda, and commonest at higher altitudes. Patchily common in N Malawi, where common in Uzumara Forest Reserve and fairly local in Nyika National Park, also in Chimaliro Army Range.

Distribution of the Mountain Illadopsis - Range Map
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  • Year-round
  • Migration
  • Breeding
  • Non-Breeding
Distribution of the Mountain Illadopsis

Recommended Citation

Collar, N. and C. Robson (2020). Mountain Illadopsis (Illadopsis pyrrhoptera), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.mouill1.01
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